Newer
Older
Ralf S. Engelschall
committed
_______________
Changes between 0.9.8b and 0.9.9 [xx XXX xxxx]
*) Change the array representation of binary polynomials: the list
of degrees of non-zero coefficients is now terminated with -1.
Previously it was terminated with 0, which was also part of the
value; thus, the array representation was not applicable to
polynomials where t^0 has coefficient zero. This change makes
the array representation useful in a more general context.
[Douglas Stebila]
*) Various modifications and fixes to SSL/TLS cipher string
handling. For ECC, the code now distinguishes between fixed ECDH
with RSA certificates on the one hand and with ECDSA certificates
on the other hand, since these are separate ciphersuites. The
unused code for Fortezza ciphersuites has been removed.
For consistency with EDH, ephemeral ECDH is now called "EECDH"
(not "ECDHE"). For consistency with the code for DH
certificates, use of ECDH certificates is now considered ECDH
authentication, not RSA or ECDSA authentication (the latter is
merely the CA's signing algorithm and not actively used in the
protocol).
The temporary ciphersuite alias "ECCdraft" is no longer
available, and ECC ciphersuites are no longer excluded from "ALL"
and "DEFAULT". The following aliases now exist for RFC 4492
ciphersuites, most of these by analogy with the DH case:
kECDHr - ECDH cert, signed with RSA
kECDHe - ECDH cert, signed with ECDSA
kECDH - ECDH cert (signed with either RSA or ECDSA)
kEECDH - ephemeral ECDH
ECDH - ECDH cert or ephemeral ECDH
aECDH - ECDH cert
aECDSA - ECDSA cert
ECDSA - ECDSA cert
AECDH - anonymous ECDH
EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
[Bodo Moeller]
Dr. Stephen Henson
committed
*) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
Use correct micalg parameters depending on digest(s) in signed message.
[Steve Henson]
*) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
[Steve Henson]
*) Initial engine support for EVP_PKEY_METHOD. New functions to permit
an engine to register a method. Add ENGINE lookups for methods and
functional reference processing.
[Steve Henson]
*) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
EVP_{Sign,Verify}* which allow an application to customise the signature
process.
[Steve Henson]
*) New -resign option to smime utility. This adds one or more signers
to an existing PKCS#7 signedData structure. Also -md option to use an
alternative message digest algorithm for signing.
[Steve Henson]
*) Tidy up PKCS#7 routines and add new functions to make it easier to
create PKCS7 structures containing multiple signers. Update smime
application to support multiple signers.
[Steve Henson]
*) New -macalg option to pkcs12 utility to allow setting of an alternative
digest MAC.
[Steve Henson]
*) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
Dr. Stephen Henson
committed
Reorganize PBE internals to lookup from a static table using NIDs,
add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
PRF which will be automatically used with PBES2.
[Steve Henson]
*) Replace the algorithm specific calls to generate keys in "req" with the
new API.
[Steve Henson]
*) Update PKCS#7 enveloped data routines to use new API. This is now
supported by any public key method supporting the encrypt operation. A
ctrl is added to allow the public key algorithm to examine or modify
the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
a no op.
[Steve Henson]
*) Add a ctrl to asn1 method to allow a public key algorithm to express
a default digest type to use. In most cases this will be SHA1 but some
algorithms (such as GOST) need to specify an alternative digest. The
return value indicates how strong the prefernce is 1 means optional and
2 is mandatory (that is it is the only supported type). Modify
ASN1_item_sign() to accept a NULL digest argument to indicate it should
use the default md. Update openssl utilities to use the default digest
type for signing if it is not explicitly indicated.
[Steve Henson]
*) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
signing method from the key type. This effectively removes the link
between digests and public key types.
[Steve Henson]
*) Add an OID cross reference table and utility functions. Its purpose is to
translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
rsaEncryption. This will allow some of the algorithm specific hackery
needed to use the correct OID to be removed.
[Steve Henson]
*) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
structures for PKCS7_sign(). They are now set up by the relevant public
key ASN1 method.
[Steve Henson]
*) Add provisional EC pkey method with support for ECDSA and ECDH.
[Steve Henson]
*) Add support for key derivation (agreement) in the API, DH method and
pkeyutl.
[Steve Henson]
*) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
public and private key formats. As a side effect these add additional
command line functionality not previously available: DSA signatures can be
generated and verified using pkeyutl and DH key support and generation in
pkey, genpkey.
[Steve Henson]
*) BeOS support.
[Oliver Tappe <zooey@hirschkaefer.de>]
*) New make target "install_html_docs" installs HTML renditions of the
manual pages.
[Oliver Tappe <zooey@hirschkaefer.de>]
*) New utility "genpkey" this is analagous to "genrsa" etc except it can
generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
support key and parameter generation and add initial key generation
functionality for RSA.
[Steve Henson]
*) Add functions for main EVP_PKEY_method operations. The undocumented
functions EVP_PKEY_{encrypt,decrypt} have been renamed to
EVP_PKEY_{encrypt,decrypt}_old.
[Steve Henson]
Dr. Stephen Henson
committed
*) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
key API, doesn't do much yet.
[Steve Henson]
Dr. Stephen Henson
committed
*) New function EVP_PKEY_asn1_get0_info() to retrieve information about
public key algorithms. New option to openssl utility:
"list-public-key-algorithms" to print out info.
[Steve Henson]
*) Implement the Supported Elliptic Curves Extension for
ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
[Douglas Stebila]
*) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
EVP_CIPHER structures to avoid later problems in EVP_cleanup().
[Steve Henson]
*) New utilities pkey and pkeyparam. These are similar to algorithm specific
utilities such as rsa, dsa, dsaparam etc except they process any key
type.
*) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
EVP_PKEY_print_param() to print public key data from an EVP_PKEY
structure.
[Steve Henson]
Dr. Stephen Henson
committed
*) Initial support for pluggable public key ASN1.
De-spaghettify the public key ASN1 handling. Move public and private
key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
algorithm specific handling to a single module within the relevant
algorithm directory. Add functions to allow (near) opaque processing
of public and private key structures.
[Steve Henson]
*) Implement the Supported Point Formats Extension for
ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
[Douglas Stebila]
*) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
for the psk identity [hint] and the psk callback functions to the
SSL_SESSION, SSL and SSL_CTX structure.
New ciphersuites:
PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
PSK-AES256-CBC-SHA
New functions:
SSL_CTX_use_psk_identity_hint
SSL_get_psk_identity_hint
SSL_get_psk_identity
SSL_use_psk_identity_hint
[Mika Kousa and Pasi Eronen of Nokia Corporation]
*) Add RFC 3161 compliant time stamp request creation, response generation
and response verification functionality.
[Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
*) Add initial support for TLS extensions, specifically for the server_name
extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
have new members for a host name. The SSL data structure has an
additional member SSL_CTX *initial_ctx so that new sessions can be
stored in that context to allow for session resumption, even after the
SSL has been switched to a new SSL_CTX in reaction to a client's
server_name extension.
New functions (subject to change):
SSL_get_servername()
SSL_get_servername_type()
SSL_set_SSL_CTX()
New CTRL codes and macros (subject to change):
SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
- SSL_CTX_set_tlsext_servername_callback()
SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
- SSL_CTX_set_tlsext_servername_arg()
SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_hostname()
openssl s_client has a new '-servername ...' option.
openssl s_server has new options '-servername_host ...', '-cert2 ...',
'-key2 ...', '-servername_fatal' (subject to change). This allows
testing the HostName extension for a specific single host name ('-cert'
and '-key' remain fallbacks for handshakes without HostName
negotiation). If the unrecogninzed_name alert has to be sent, this by
default is a warning; it becomes fatal with the '-servername_fatal'
option.
[Peter Sylvester, Remy Allais, Christophe Renou]
*) Whirlpool hash implementation is added.
[Andy Polyakov]
*) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
bn(64,32). Because of instruction set limitations it doesn't have
any negative impact on performance. This was done mostly in order
to make it possible to share assembler modules, such as bn_mul_mont
implementations, between 32- and 64-bit builds without hassle.
[Andy Polyakov]
*) Move code previously exiled into file crypto/ec/ec2_smpt.c
to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
macro.
[Bodo Moeller]
*) New candidate for BIGNUM assembler implementation, bn_mul_mont,
dedicated Montgomery multiplication procedure, is introduced.
BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
"64-bit" performance on certain 32-bit targets.
[Andy Polyakov]
*) New option SSL_OP_NO_COMP to disable use of compression selectively
in SSL structures. New SSL ctrl to set maximum send fragment size.
Save memory by seeting the I/O buffer sizes dynamically instead of
using the maximum available value.
[Steve Henson]
*) New option -V for 'openssl ciphers'. This prints the ciphersuite code
in addition to the text details.
[Bodo Moeller]
*) Very, very preliminary EXPERIMENTAL support for printing of general
ASN1 structures. This currently produces rather ugly output and doesn't
handle several customised structures at all.
[Steve Henson]
*) Integrated support for PVK file format and some related formats such
as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
these in the 'rsa' and 'dsa' utilities.
[Steve Henson]
*) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
[Steve Henson]
*) Remove the ancient ASN1_METHOD code. This was only ever used in one
place for the (very old) "NETSCAPE" format certificates which are now
handled using new ASN1 code equivalents.
*) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
pointer and make the SSL_METHOD parameter in SSL_CTX_new,
SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
[Nils Larsch]
Dr. Stephen Henson
committed
*) Modify CRL distribution points extension code to print out previously
unsupported fields. Enhance extension setting code to allow setting of
all fields.
Dr. Stephen Henson
committed
[Steve Henson]
*) Add print and set support for Issuing Distribution Point CRL extension.
*) Change 'Configure' script to enable Camellia by default.
[NTT]
Changes between 0.9.8b and 0.9.8c [xx XXX xxxx]
*) Disable "ECCdraft" ciphersuites more thoroughly. Now special
treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
cannot be implicitly activated as part of, e.g., the "AES" alias.
However, please upgrade to OpenSSL 0.9.9[-dev] for
non-experimental use of the ECC ciphersuites to get TLS extension
support, which is required for curve and point format negotiation
to avoid potential handshake problems.
[Bodo Moeller]
*) Disable rogue ciphersuites:
- SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
- SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
- SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
The latter two were purportedly from
draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
appear there.
Also deactive the remaining ciphersuites from
draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
unofficial, and the ID has long expired.
[Bodo Moeller]
*) Fix RSA blinding Heisenbug (problems sometimes occured on
dual-core machines) and other potential thread-safety issues.
[Bodo Moeller]
*) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
versions), which is now available for royalty-free use
(see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
Also, add Camellia TLS ciphersuites from RFC 4132.
To minimize changes between patchlevels in the OpenSSL 0.9.8
series, Camellia remains excluded from compilation unless OpenSSL
is configured with 'enable-camellia'.
[NTT]
*) Disable the padding bug check when compression is in use. The padding
bug check assumes the first packet is of even length, this is not
necessarily true if compresssion is enabled and can result in false
positives causing handshake failure. The actual bug test is ancient
code so it is hoped that implementations will either have fixed it by
now or any which still have the bug do not support compression.
[Steve Henson]
Changes between 0.9.8a and 0.9.8b [04 May 2006]
Dr. Stephen Henson
committed
*) When applying a cipher rule check to see if string match is an explicit
cipher suite and only match that one cipher suite if it is.
[Steve Henson]
*) Link in manifests for VC++ if needed.
[Austin Ziegler <halostatue@gmail.com>]
*) Update support for ECC-based TLS ciphersuites according to
draft-ietf-tls-ecc-12.txt with proposed changes (but without
TLS extensions, which are supported starting with the 0.9.9
branch, not in the OpenSSL 0.9.8 branch).
*) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
opaque EVP_CIPHER_CTX handling.
[Steve Henson]
*) Fixes and enhancements to zlib compression code. We now only use
"zlib1.dll" and use the default __cdecl calling convention on Win32
to conform with the standards mentioned here:
http://www.zlib.net/DLL_FAQ.txt
Static zlib linking now works on Windows and the new --with-zlib-include
--with-zlib-lib options to Configure can be used to supply the location
of the headers and library. Gracefully handle case where zlib library
can't be loaded.
[Steve Henson]
*) Several fixes and enhancements to the OID generation code. The old code
sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
handle numbers larger than ULONG_MAX, truncated printing and had a
non standard OBJ_obj2txt() behaviour.
[Steve Henson]
*) Add support for building of engines under engine/ as shared libraries
under VC++ build system.
[Steve Henson]
*) Corrected the numerous bugs in the Win32 path splitter in DSO.
Hopefully, we will not see any false combination of paths any more.
[Richard Levitte]
Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
*) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
(part of SSL_OP_ALL). This option used to disable the
countermeasure against man-in-the-middle protocol-version
rollback in the SSL 2.0 server implementation, which is a bad
[Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
for Information Security, National Institute of Advanced Industrial
Science and Technology [AIST], Japan)]
*) Add two function to clear and return the verify parameter flags.
[Steve Henson]
*) Keep cipherlists sorted in the source instead of sorting them at
runtime, thus removing the need for a lock.
[Nils Larsch]
*) Avoid some small subgroup attacks in Diffie-Hellman.
[Nick Mathewson and Ben Laurie]
*) Add functions for well-known primes.
[Nick Mathewson]
*) Extended Windows CE support.
[Satoshi Nakamura and Andy Polyakov]
Dr. Stephen Henson
committed
*) Initialize SSL_METHOD structures at compile time instead of during
runtime, thus removing the need for a lock.
[Steve Henson]
*) Make PKCS7_decrypt() work even if no certificate is supplied by
attempting to decrypt each encrypted key in turn. Add support to
smime utility.
[Steve Henson]
Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
[NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
OpenSSL 0.9.8.]
*) Add libcrypto.pc and libssl.pc for those who feel they need them.
[Richard Levitte]
*) Change CA.sh and CA.pl so they don't bundle the CSR and the private
key into the same file any more.
[Richard Levitte]
*) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
[Andy Polyakov]
*) Add -utf8 command line and config file option to 'ca'.
[Stefan <stf@udoma.org]
*) Removed the macro des_crypt(), as it seems to conflict with some
libraries. Use DES_crypt().
[Richard Levitte]
*) Correct naming of the 'chil' and '4758cca' ENGINEs. This
involves renaming the source and generated shared-libs for
both. The engines will accept the corrected or legacy ids
('ncipher' and '4758_cca' respectively) when binding. NB,
this only applies when building 'shared'.
[Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
*) Add attribute functions to EVP_PKEY structure. Modify
PKCS12_create() to recognize a CSP name attribute and
use it. Make -CSP option work again in pkcs12 utility.
[Steve Henson]
*) Add new functionality to the bn blinding code:
- automatic re-creation of the BN_BLINDING parameters after
a fixed number of uses (currently 32)
- add new function for parameter creation
- introduce flags to control the update behaviour of the
BN_BLINDING parameters
- hide BN_BLINDING structure
Add a second BN_BLINDING slot to the RSA structure to improve
performance when a single RSA object is shared among several
threads.
[Nils Larsch]
*) Add support for DTLS.
[Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
*) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
[Walter Goulet]
*) Remove buggy and incompletet DH cert support from
ssl/ssl_rsa.c and ssl/s3_both.c
[Nils Larsch]
*) Use SHA-1 instead of MD5 as the default digest algorithm for
the apps/openssl applications.
[Nils Larsch]
*) Compile clean with "-Wall -Wmissing-prototypes
-Wstrict-prototypes -Wmissing-declarations -Werror". Currently
DEBUG_SAFESTACK must also be set.
[Ben Laurie]
*) Change ./Configure so that certain algorithms can be disabled by default.
The new counterpiece to "no-xxx" is "enable-xxx".
The patented RC5 and MDC2 algorithms will now be disabled unless
"enable-rc5" and "enable-mdc2", respectively, are specified.
(IDEA remains enabled despite being patented. This is because IDEA
is frequently required for interoperability, and there is no license
fee for non-commercial use. As before, "no-idea" can be used to
avoid this algorithm.)
[Bodo Moeller]
*) Add processing of proxy certificates (see RFC 3820). This work was
sponsored by KTH (The Royal Institute of Technology in Stockholm) and
EGEE (Enabling Grids for E-science in Europe).
[Richard Levitte]
*) RC4 performance overhaul on modern architectures/implementations, such
as Intel P4, IA-64 and AMD64.
[Andy Polyakov]
Dr. Stephen Henson
committed
*) New utility extract-section.pl. This can be used specify an alternative
section number in a pod file instead of having to treat each file as
a separate case in Makefile. This can be done by adding two lines to the
pod file:
=for comment openssl_section:XXX
The blank line is mandatory.
[Steve Henson]
*) New arguments -certform, -keyform and -pass for s_client and s_server
to allow alternative format key and certificate files and passphrase
sources.
[Steve Henson]
*) New structure X509_VERIFY_PARAM which combines current verify parameters,
update associated structures and add various utility functions.
Add new policy related verify parameters, include policy checking in
standard verify code. Enhance 'smime' application with extra parameters
to support policy checking and print out.
[Steve Henson]
*) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
Nehemiah processors. These extensions support AES encryption in hardware
as well as RNG (though RNG support is currently disabled).
[Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
*) Deprecate BN_[get|set]_params() functions (they were ignored internally).
[Geoff Thorpe]
*) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
[Andy Polyakov and a number of other people]
*) Improved PowerPC platform support. Most notably BIGNUM assembler
implementation contributed by IBM.
[Suresh Chari, Peter Waltenberg, Andy Polyakov]
*) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
exponent rather than 'unsigned long'. There is a corresponding change to
the new 'rsa_keygen' element of the RSA_METHOD structure.
[Jelte Jansen, Geoff Thorpe]
*) Functionality for creating the initial serial number file is now
moved from CA.pl to the 'ca' utility with a new option -create_serial.
(Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
number file to 1, which is bound to cause problems. To avoid
the problems while respecting compatibility between different 0.9.7
patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
CA.pl for serial number initialization. With the new release 0.9.8,
we can fix the problem directly in the 'ca' utility.)
Dr. Stephen Henson
committed
[Steve Henson]
*) Reduced header interdepencies by declaring more opaque objects in
ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
give fewer recursive includes, which could break lazy source code - so
this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
developers should define this symbol when building and using openssl to
ensure they track the recommended behaviour, interfaces, [etc], but
backwards-compatible behaviour prevails when this isn't defined.
[Geoff Thorpe]
*) New function X509_POLICY_NODE_print() which prints out policy nodes.
[Steve Henson]
*) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
This will generate a random key of the appropriate length based on the
cipher context. The EVP_CIPHER can provide its own random key generation
routine to support keys of a specific form. This is used in the des and
3des routines to generate a key of the correct parity. Update S/MIME
code to use new functions and hence generate correct parity DES keys.
Add EVP_CHECK_DES_KEY #define to return an error if the key is not
valid (weak or incorrect parity).
[Steve Henson]
*) Add a local set of CRLs that can be used by X509_verify_cert() as well
as looking them up. This is useful when the verified structure may contain
CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
present unless the new PKCS7_NO_CRL flag is asserted.
[Steve Henson]
*) Extend ASN1 oid configuration module. It now additionally accepts the
syntax:
shortName = some long name, 1.2.3.4
[Steve Henson]
*) Reimplemented the BN_CTX implementation. There is now no more static
limitation on the number of variables it can handle nor the depth of the
"stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
information can now expand as required, and rather than having a single
static array of bignums, BN_CTX now uses a linked-list of such arrays
allowing it to expand on demand whilst maintaining the usefulness of
BN_CTX's "bundling".
[Geoff Thorpe]
*) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
to allow all RSA operations to function using a single BN_CTX.
[Geoff Thorpe]
*) Preliminary support for certificate policy evaluation and checking. This
is initially intended to pass the tests outlined in "Conformance Testing
of Relying Party Client Certificate Path Processing Logic" v1.07.
[Steve Henson]
*) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
remained unused and not that useful. A variety of other little bignum
tweaks and fixes have also been made continuing on from the audit (see
below).
[Geoff Thorpe]
*) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
associated ASN1, EVP and SSL functions and old ASN1 macros.
[Richard Levitte]
*) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
and this should never fail. So the return value from the use of
BN_set_word() (which can fail due to needless expansion) is now deprecated;
if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
[Geoff Thorpe]
*) BN_CTX_get() should return zero-valued bignums, providing the same
initialised value as BN_new().
[Geoff Thorpe, suggested by Ulf Möller]
*) Support for inhibitAnyPolicy certificate extension.
[Steve Henson]
*) An audit of the BIGNUM code is underway, for which debugging code is
enabled when BN_DEBUG is defined. This makes stricter enforcements on what
is considered valid when processing BIGNUMs, and causes execution to
assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
further steps are taken to deliberately pollute unused data in BIGNUM
structures to try and expose faulty code further on. For now, openssl will
(in its default mode of operation) continue to tolerate the inconsistent
forms that it has tolerated in the past, but authors and packagers should
consider trying openssl and their own applications when compiled with
these debugging symbols defined. It will help highlight potential bugs in
their own code, and will improve the test coverage for OpenSSL itself. At
some point, these tighter rules will become openssl's default to improve
maintainability, though the assert()s and other overheads will remain only
in debugging configurations. See bn.h for more details.
[Geoff Thorpe, Nils Larsch, Ulf Möller]
*) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
that can only be obtained through BN_CTX_new() (which implicitly
initialises it). The presence of this function only made it possible
to overwrite an existing structure (and cause memory leaks).
[Geoff Thorpe]
*) Because of the callback-based approach for implementing LHASH as a
template type, lh_insert() adds opaque objects to hash-tables and
lh_doall() or lh_doall_arg() are typically used with a destructor callback
to clean up those corresponding objects before destroying the hash table
(and losing the object pointers). So some over-zealous constifications in
LHASH have been relaxed so that lh_insert() does not take (nor store) the
objects as "const" and the lh_doall[_arg] callback wrappers are not
prototyped to have "const" restrictions on the object pointers they are
given (and so aren't required to cast them away any more).
[Geoff Thorpe]
*) The tmdiff.h API was so ugly and minimal that our own timing utility
(speed) prefers to use its own implementation. The two implementations
haven't been consolidated as yet (volunteers?) but the tmdiff API has had
its object type properly exposed (MS_TM) instead of casting to/from "char
*". This may still change yet if someone realises MS_TM and "ms_time_***"
aren't necessarily the greatest nomenclatures - but this is what was used
internally to the implementation so I've used that for now.
[Geoff Thorpe]
*) Ensure that deprecated functions do not get compiled when
Geoff Thorpe
committed
OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
the self-tests were still using deprecated key-generation functions so
these have been updated also.
[Geoff Thorpe]
*) Reorganise PKCS#7 code to separate the digest location functionality
into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
New function PKCS7_set_digest() to set the digest type for PKCS#7
digestedData type. Add additional code to correctly generate the
digestedData type and add support for this type in PKCS7 initialization
functions.
[Steve Henson]
*) New function PKCS7_set0_type_other() this initializes a PKCS7
structure of type "other".
[Steve Henson]
*) Fix prime generation loop in crypto/bn/bn_prime.pl by making
sure the loop does correctly stop and breaking ("division by zero")
modulus operations are not performed. The (pre-generated) prime
table crypto/bn/bn_prime.h was already correct, but it could not be
re-generated on some platforms because of the "division by zero"
situation in the script.
[Ralf S. Engelschall]
*) Update support for ECC-based TLS ciphersuites according to
draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
SHA-1 now is only used for "small" curves (where the
representation of a field element takes up to 24 bytes); for
larger curves, the field element resulting from ECDH is directly
used as premaster secret.
[Douglas Stebila (Sun Microsystems Laboratories)]
*) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
curve secp160r1 to the tests.
[Douglas Stebila (Sun Microsystems Laboratories)]
*) Add the possibility to load symbols globally with DSO.
[Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
Richard Levitte
committed
*) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
control of the error stack.
[Richard Levitte]
*) Add support for STORE in ENGINE.
[Richard Levitte]
*) Add the STORE type. The intention is to provide a common interface
to certificate and key stores, be they simple file-based stores, or
HSM-type store, or LDAP stores, or...
NOTE: The code is currently UNTESTED and isn't really used anywhere.
[Richard Levitte]
*) Add a generic structure called OPENSSL_ITEM. This can be used to
pass a list of arguments to any function as well as provide a way
for a function to pass data back to the caller.
[Richard Levitte]
*) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
works like BUF_strdup() but can be used to duplicate a portion of
a string. The copy gets NUL-terminated. BUF_memdup() duplicates
a memory area.
[Richard Levitte]
*) Add the function sk_find_ex() which works like sk_find(), but will
return an index to an element even if an exact match couldn't be
found. The index is guaranteed to point at the element where the
searched-for key would be inserted to preserve sorting order.
[Richard Levitte]
*) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
takes an extra flags argument for optional functionality. Currently,
the following flags are defined:
OBJ_BSEARCH_VALUE_ON_NOMATCH
This one gets OBJ_bsearch_ex() to return a pointer to the first
element where the comparing function returns a negative or zero
number.
OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
This one gets OBJ_bsearch_ex() to return a pointer to the first
element where the comparing function returns zero. This is useful
if there are more than one element where the comparing function
returns zero.
[Richard Levitte]
*) Make it possible to create self-signed certificates with 'openssl ca'
in such a way that the self-signed certificate becomes part of the
CA database and uses the same mechanisms for serial number generation
as all other certificate signing. The new flag '-selfsign' enables
this functionality. Adapt CA.sh and CA.pl.in.
[Richard Levitte]
*) Add functionality to check the public key of a certificate request
against a given private. This is useful to check that a certificate
request can be signed by that key (self-signing).
[Richard Levitte]
*) Make it possible to have multiple active certificates with the same
subject in the CA index file. This is done only if the keyword
'unique_subject' is set to 'no' in the main CA section (default
if 'CA_default') of the configuration file. The value is saved
with the database itself in a separate index attribute file,
named like the index file with '.attr' appended to the name.
[Richard Levitte]
*) Generate muti valued AVAs using '+' notation in config files for
req and dirName.
[Steve Henson]
*) Support for nameConstraints certificate extension.
[Steve Henson]
*) Support for policyConstraints certificate extension.
[Steve Henson]
*) Support for policyMappings certificate extension.
[Steve Henson]
*) Make sure the default DSA_METHOD implementation only uses its
dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
and change its own handlers to be NULL so as to remove unnecessary
indirection. This lets alternative implementations fallback to the
default implementation more easily.
[Geoff Thorpe]
*) Support for directoryName in GeneralName related extensions
in config files.
[Steve Henson]
Richard Levitte
committed
*) Make it possible to link applications using Makefile.shared.
Make that possible even when linking against static libraries!
[Richard Levitte]
*) Support for single pass processing for S/MIME signing. This now
means that S/MIME signing can be done from a pipe, in addition
cleartext signing (multipart/signed type) is effectively streaming
and the signed data does not need to be all held in memory.
This is done with a new flag PKCS7_STREAM. When this flag is set
PKCS7_sign() only initializes the PKCS7 structure and the actual signing
is done after the data is output (and digests calculated) in
SMIME_write_PKCS7().
[Steve Henson]
*) Add full support for -rpath/-R, both in shared libraries and
applications, at least on the platforms where it's known how
to do it.
[Richard Levitte]
*) In crypto/ec/ec_mult.c, implement fast point multiplication with
will now compute a table of multiples of the generator that
faster (notably in the case of a single point multiplication,
scalar * generator).
[Nils Larsch, Bodo Moeller]
*) IPv6 support for certificate extensions. The various extensions
which use the IP:a.b.c.d can now take IPv6 addresses using the
formats of RFC1884 2.2 . IPv6 addresses are now also displayed
correctly.
[Steve Henson]
*) Added an ENGINE that implements RSA by performing private key
exponentiations with the GMP library. The conversions to and from
GMP's mpz_t format aren't optimised nor are any montgomery forms
cached, and on x86 it appears OpenSSL's own performance has caught up.
However there are likely to be other architectures where GMP could
provide a boost. This ENGINE is not built in by default, but it can be
specified at Configure time and should be accompanied by the necessary
linker additions, eg;
./config -DOPENSSL_USE_GMP -lgmp
[Geoff Thorpe]
*) "openssl engine" will not display ENGINE/DSO load failure errors when
testing availability of engines with "-t" - the old behaviour is
produced by increasing the feature's verbosity with "-tt".
[Geoff Thorpe]
*) ECDSA routines: under certain error conditions uninitialized BN objects
could be freed. Solution: make sure initialization is performed early
enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
via PR#459)
[Lutz Jaenicke]
*) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
and DH_METHOD (eg. by ENGINE implementations) to override the normal
software implementations. For DSA and DH, parameter generation can
also be overriden by providing the appropriate method callbacks.
[Geoff Thorpe]
*) Change the "progress" mechanism used in key-generation and
primality testing to functions that take a new BN_GENCB pointer in
place of callback/argument pairs. The new API functions have "_ex"
postfixes and the older functions are reimplemented as wrappers for
the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
declarations of the old functions to help (graceful) attempts to
migrate to the new functions. Also, the new key-generation API
functions operate on a caller-supplied key-structure and return
success/failure rather than returning a key or NULL - this is to
help make "keygen" another member function of RSA_METHOD etc.
Example for using the new callback interface:
int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
void *my_arg = ...;
BN_GENCB my_cb;
BN_GENCB_set(&my_cb, my_callback, my_arg);
return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
/* For the meaning of a, b in calls to my_callback(), see the
* documentation of the function that calls the callback.
* cb will point to my_cb; my_arg can be retrieved as cb->arg.
* my_callback should return 1 if it wants BN_is_prime_ex()
* to continue, or 0 to stop.
*/
[Geoff Thorpe]
*) Change the ZLIB compression method to be stateful, and make it
available to TLS with the number defined in
draft-ietf-tls-compression-04.txt.
[Richard Levitte]
*) Add the ASN.1 structures and functions for CertificatePair, which
is defined as follows (according to X.509_4thEditionDraftV6.pdf):
CertificatePair ::= SEQUENCE {
forward [0] Certificate OPTIONAL,
reverse [1] Certificate OPTIONAL,
-- at least one of the pair shall be present -- }
Also implement the PEM functions to read and write certificate
pairs, and defined the PEM tag as "CERTIFICATE PAIR".
This needed to be defined, mostly for the sake of the LDAP
attribute crossCertificatePair, but may prove useful elsewhere as
well.
[Richard Levitte]
*) Make it possible to inhibit symlinking of shared libraries in
Makefile.shared, for Cygwin's sake.
[Richard Levitte]
*) Extend the BIGNUM API by creating a function
void BN_set_negative(BIGNUM *a, int neg);
and a macro that behave like
int BN_is_negative(const BIGNUM *a);
to avoid the need to access 'a->neg' directly in applications.
[Nils Larsch]
*) Implement fast modular reduction for pseudo-Mersenne primes
used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
EC_GROUP_new_curve_GFp() will now automatically use this
if applicable.
[Nils Larsch <nla@trustcenter.de>]
*) Add new lock type (CRYPTO_LOCK_BN).
[Bodo Moeller]
*) Change the ENGINE framework to automatically load engines
dynamically from specific directories unless they could be
found to already be built in or loaded. Move all the
current engines except for the cryptodev one to a new
directory engines/.
The engines in engines/ are built as shared libraries if
the "shared" options was given to ./Configure or ./config.
Otherwise, they are inserted in libcrypto.a.
/usr/local/ssl/engines is the default directory for dynamic
engines, but that can be overriden at configure time through
the usual use of --prefix and/or --openssldir, and at run
time with the environment variable OPENSSL_ENGINES.
[Geoff Thorpe and Richard Levitte]
*) Add Makefile.shared, a helper makefile to build shared
libraries. Addapt Makefile.org.
[Richard Levitte]
*) Add version info to Win32 DLLs.
[Peter 'Luna' Runestig" <peter@runestig.com>]
*) Add new 'medium level' PKCS#12 API. Certificates and keys
can be added using this API to created arbitrary PKCS#12
files while avoiding the low level API.
New options to PKCS12_create(), key or cert can be NULL and
will then be omitted from the output file. The encryption
algorithm NIDs can be set to -1 for no encryption, the mac
iteration count can be set to 0 to omit the mac.
Enhance pkcs12 utility by making the -nokeys and -nocerts
options work when creating a PKCS#12 file. New option -nomac
to omit the mac, NONE can be set for an encryption algorithm.